FIELD: environment protection; antiseepage barriers preventing natural water pollution with radioactive and toxic materials for waste storage locations.
SUBSTANCE: antiseepage barrier is constructed in aeration zones or in porous water-saturated horizons by forcing gel-forming solution through boreholes. Solution of acid decomposition of ijolite-urtite rock incorporating ions of aluminum, alkali-earth elements, and orthosilicic acid is used as gel-forming solution. 10-15% nitric acid is used for urtite decomposition, rock proportion being as follows: acid, 1 : 10 - 1 : 20; decomposition time, 2-2.5 h; temperature, 40 °C. Antiseepage barrier is obtained due to formation of Si-Ai-Ca-Mg-Fe containing polymer that forms gel directly in vapor space of rock.
EFFECT: facilitated construction of antiseepage barrier.
2 cl, 1 dwg
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